Today, at Microsoft's BUILD conference in Anaheim, California, Microsoft unveiled the biggest overhaul of Windows since Windows 95. The venue was not coincidental; in the same city, in 1993, during the first Professional Developers Conference, Microsoft unveiled Windows 95 for the first time. Steven Sinofsky, supported by an army of Microsoft executives, demonstrated a whole boatload of things for Windows 8, and make no mistake, they had a lot to show. Two important notes: the Windows 8 Developer Preview will be free to download later today (no activation, will be updated regularly, and includes the new interface), and Win32 is the past.